GHSA-gxhx-g4fq-49hj CarrierWave Content-Type allowlist bypass vulnerability, possibly leading to XSS

• RubyGems carrierwave: >= 3.0.0, < 3.0.5 → fixed in 3.0.5 • RubyGems carrierwave: < 2.2.5 → fixed in 2.2.5

Impact CarrierWave::Uploader::ContentTypeAllowlist has a Content-Type allowlist bypass vulnerability, possibly leading to XSS. The validation in `allowlisted_content_type?` determines Content-Type permissions by performing a partial match. If the `content_type` argument of `allowlisted_content_type?` is passed a value crafted by the attacker, Content-Types not included in the `content_type_allowlist` will be allowed. In addition, by setting the Content-Type configured by the attacker at the time of file delivery, it is possible to cause XSS on the user's browser when the uploaded file is opened. Patches Upgrade to 3.0.5 or 2.2.5. Workarounds When validating with `allowlisted_content_type?` in CarrierWave::Uploader::ContentTypeAllowlist , forward match(`\A`) the Content-Type set in `content_type_allowlist`, preventing unintentional permission of `text/html;image/png` when you want to allow only `image/png` in `content_type_allowlist`. References OWASP - File Upload Cheat Sheet